General bacterial porin family. General bacterial porins are a family of proteins from the outer membranes of Gram-negative bacteria. The porins act as molecular filters for hydrophilic compounds.[1] They are responsible for the 'molecular sieve' properties of the outer membrane.
About the CFR. The Code of Federal Regulations (CFR) is an annual codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.
CFR publishes the bimonthly magazine Foreign Affairs, widely considered to be the most influential magazine for the analysis and debate of foreign policy. Its website, ForeignAffairs.com, publishes original daily features and hosts the magazine's complete archives dating back to 1922.